wled

Maxim Integrated Products introduces the MAX17061 8-string white-LED (WLED) driver with an integrated MOSFET switch. This device utilizes an internal switch, current-mode, step-up controller to drive the LED array, which can be configured for up to eight parallel strings with ten LEDs per string. To ensure even LED brightness, each string employs a current source that achieves ±1.5% current-balance accuracy between strings. Additionally, the MAX17061 generates a DPWM signal for accurate WLED dimming control. The DPWM's signal is controlled through a PWM interface, an SMBus™-compatible interface, or both.

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SUNNYVALE, CA April 17, 2008 Maxim Integrated Products (Pink OTC Markets: MXIM) introduces the MAX8822, the industry's only white-LED (WLED) driver to combine a highly efficient negative charge pump with two independent, low-dropout (LDO) regulators. Available in a tiny, 3mm x 3mm x 0.8mm TQFN package, this single-chip solution for driving up to four WLEDs is 50% smaller than the standard two-chip solution. To achieve the industry's highest efficiency, the MAX8822 features a negative-charge-pump architecture that completely eliminates high-side in-line resistance, delaying 1x mode to 2x mode transition during battery discharge.

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SUNNYVALE, CA March 10, 2008 Maxim Integrated Products (Pink Sheets: MXIM) introduces the MAX8821 the only white-LED (WLED) driver to combine a highly efficient, negative charge pump with a fully differential, bridged audio amplifier and two low-noise, low-dropout (LDO) current regulators. To maximize efficiency, this LED driver features a negative architecture that completely eliminates high-side, in-line switch resistance loss in 1x mode, delaying 1x to 1.5x mode transitions during battery discharge.

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